Existing Building Policy Proposal. Cost Evaluation

Transcription

1 Existing Building Policy Proposal Cost Evaluation

2 Apartment Roof Replacement 55, square feet, 5 floors, roof is 11, sq ft. Green Roof Coverage requirement: 3% or 3,3 sq ft. Cool Roof + small amount of green: 3% or 33 sq ft Conventional Roof Replacement Cost ($) 3% Green Roof* Cool Roof & 3% Green** $137,7 $137,7 Additional Cost ($) $52,581 $6,58 Cost Increase (%) 38% 4.4% *Green roof on 3% of required area. **Green area of 3% of required area on the ground

3 Industrial Roof Replacement 15, square feet, 1 floor, roof is 15, sq ft. Green Roof Coverage requirement: 1% or 15, sq ft. Cool Roof + small amount of green: 3% or 15 sq ft. Conventional Roof Replacement Cost ($) 3% Green Roof* Cool Roof & 3% Green** $1,539,9 $1,539,9 Additional Cost ($) $16,589 $29,785 Cost Increase (%) 1% 1.9% *Green roof on 3% of required area. **Green area of 3% of required area on the ground

4 Retail Roof Replacement 15, square feet, 1 floor, roof is 15, sq ft. Green Roof Coverage requirement: 5% for or 75, sq ft. Cool Roof + small amount of green: 3% or 75 sq ft. Conventional Roof Replacement Cost ($) 3% Green Roof* Cool Roof & 3% Green** $1,539,9 $1,539,9 Additional Cost ($) $683,615 $129,925 Cost Increase (%) 44% 8.4% *Green roof on 3% of required area. **Green area of 3% of required area on the ground

5 Office Roof Replacement 3, square feet, 15 floors, roof is 6, sq ft. Green Roof Coverage requirement: 6% or 3,6 sq ft. Cool Roof + small amount of green: 3% or 36 sq ft. Conventional Roof Replacement Cost ($) 3% Green Roof* Cool Roof & 3% Green** $11,25 $11,25 Additional Cost ($) $5,321 $7,58 Cost Increase (%) 5% 7.4% *Green roof on 3% of required area. **Green area of 3% of required area on the ground

6 Energy Program for Existing Buildings Cost Benefit Analysis Challenges: Building Age, Code Baseline Building Type, Space Types (Lighting) Building Class Access, Phasing Labor, Consulting, Demolition, Disposal Unintended Issues during Retrofit No retrofit will look exactly the same, making forecasting costs and savings nearly impossible. Project Drawdown, Paul Hawken

7 Net Present Value (NPV) Positive Value Revenues are greater than the costs Negative Value Costs are greater than the revenues

8 NPV of Costs & Savings ($) NPV of Costs & Savings ($) NPV of Costs & Savings ($) Cost Evaluation Energy Program: Options with Positive NPV 3, Apartment Apartment 3, Apartment 6, Industrial Industrial 25, 25, 5, 4, 15, 15, 3, 1, 1, 5, 5, 1, 7% Solar* LED Lighting Retro-commissioning 7% Solar* LED Lighting Retro-commissioning 7% Solar* LED Lighting Retro-commissioning *Solar panels on 7% of required area Note differences in vertical scale

9 NPV of Costs & Savings ($) NPV of Costs & Savings ($) NPV of Costs & Savings ($) Cost Evaluation Energy Program: Options with Positive NPV 1,6, 1,4, Retail Retail 3, Apartment 1,4, 1, Office Office 1, 1,, 8, 6, 4, 25, 15, 1, 1,, 8, 6, 4, 5, 7% Solar* LED Lighting Retro-commissioning 7% Solar* LED Lighting Retro-commissioning 7% Solar* LED Lighting Retro-commissioning *Solar panels on 7% of required area Note differences in vertical scale

10 Existing Buildings Appendices

11 NPV Parameters Parameter Assumption Source Analysis Period (years) Discount Rate (%) Energy Escalation Rate (%) Electricity Blended Rate ($/kwh) Energy Savings 32 (i.e. till year 25) 7 Guidelines and Discount Rates for Benefit-Cost Analysis of Federal Programs ( Circular-A94.pdf ) 2 Energy Escalation Rate Calculator ( Colorado, 1.5% Inflation, Commercial.98 U.S. Energy Information Administration ( t=epmt_5_6_a ): Colorado, Commercial 12% for LED 16% for retrocomissioning Calculated based on site energy use intensity (EUI) of DOE Commercial Reference Buildings in Denver, Post-198 Construction. Building types used were Mid-rise Apartment, Warehouse, Stand-alone Retail, and Medium Office.

12 NPV of Costs & Savings ($) Cost Evaluation Existing Buildings: Apartment Conventional Roof Replacement Cost ($) 7% Solar* LED Lighting Retrocommissioning $137,7 N/A N/A 3, 25, Apartment Additional Cost ($) $55,294 $85, $3,75 Cost Increase (%) 4% N/A N/A NPV ($) $28,2 $99,67 $242,398 15, 1, 5, 7% Solar* LED Lighting Retro-commissioning *Solar panels on 7% of required area

13 NPV of Costs & Savings ($) Cost Evaluation Existing Buildings: Industrial Conventional Roof Replacement Cost ($) 7% Solar* LED Lighting Retrocommissioning $1,539,9 N/A N/A 6, 5, 4, Industrial Additional Cost ($) $166,467 $255, $2, 3, Cost Increase (%) 11% N/A N/A 1, NPV ($) $212,21 $15,45 $52,54 7% Solar* LED Lighting Retro-commissioning *Solar panels on 7% of required area

14 Existing Buildings: Retail Conventional Roof Replacement Cost ($) 7% Solar* LED Lighting Retrocommissioning $1,539,9 N/A N/A Additional Cost ($) $685,39 $255, $2, Cost Increase (%) 44% N/A N/A NPV of Costs & Savings ($) 1,6, 1,4, 1, 1,, 8, 6, 4, Retail NPV ($) $1,487,335 $679,83 $1,225,433 7% Solar* LED Lighting Retro-commissioning *Solar panels on 7% of required area

15 Existing Buildings: Office Conventional Roof Replacement Cost ($) 7% Solar* LED Lighting Retrocommissioning $11,25 N/A N/A Additional Cost ($) $59,315 $51, $65, Cost Increase (%) 59% N/A N/A NPV of Costs & Savings ($) 1,4, 1, 1,, 8, 6, 4, Office NPV ($) $31,555 $465,414 $1,235,547 7% Solar* LED Lighting Retro-commissioning *Solar panels on 7% of required area